1971 "'50 years ago, when 22 Hall of Famers played in an All-Star Game for the ages...."

1971 All-Star game "'All your baseball cards came to life': The night, 50 years ago, when 22 Hall of Famers played in an All-Star Game for the ages...Let all the names on this field on this one night sink in: Rod Carew, Brooks Robinson, Luis Aparicio, Frank Robinson, Carl Yastrzemski, Reggie Jackson, Al Kaline, Harmon Killebrew, Jim Palmer, Johnny Bench, Willie McCovey, Hank Aaron, Willie Mays, Willie Stargell, Lou Brock, Ron Santo, Tom Seaver, Steve Carlton, Ferguson Jenkins, Juan Marichal and Roberto Clemente, who would sadly be there for the final time. The managers, the Orioles' Earl Weaver and the Reds' Sparky Anderson, are also in the Hall of Fame."

https://www.espn.com/mlb/story/_/id/31769224/all-your-baseball-cards-came-life-night-50-years-ago-22-hall-famers-played-all-star-game-ages?device=featurephone